to get the barrels out you have to unloose the little screw on on the left side behind the pin that hold the barrel

if the screw is out you can push the pin to the right side and the barrels come free

serial number: No. 4969. C.1
the C(?) is maybe for Caliber written with a C and not with a K as Kaliber in modern german

in "Der Waffenschmied No.45" you see Drillings in the 3400-3500 number range without proof so make before 1891. if you remember that v.Dreyse reach the 20000 in the 1880s its clear that it had a much bigger circulation. but Dreyse was one of the biggest military rifle maker then build up with government money.

eagle and U with crown proof so made in the 1890s

S and BERN on the damascus barrels, right barrel have the E in BERN back to front
I think its the stamp of the barrel maker

serial number and CP under the barrel
CP could be Collath Patent?

the barrels are inside like a mirror

I have seen worse so not bad for damascus black powder